Set of key buttons for a handset



FIG. 1 is a front view of a set of key buttons for a handset showing ournew design; and,

FIG. 2 is a perspective front view thereof.

The broken line showing of the remainder of the handset is forillustrative purposes only and forms no part of the claimed designs

The ornamental design for a set of key buttons for a handset, as shownand described.